URLNormalizer no longer rejects URLs with spaces in them. It will now
convert spaces to %20 and log a warning.
Fixed failing test in URLNormalizerTest due to Wikipedia IP change.
3.1.2 update.
Merge branch 'develop'

Conflicts:
	norconex-commons-lang/pom.xml
	norconex-commons-lang/src/changes/changes.xml
	norconex-commons-lang/src/site/markdown/download.md.vm
Merged with master release.